Permeable Projection Screens for Sound Pictures

A. L. Raven

In the development and growth of a great industry there is often an element or factor whose importance is at first overlooked, or if taken into account at all is considered of small relative value, but which later proves to be one of the real essentials.

Print ISSN
Published
1929-05
Content type
Original Research
DOI
10.5594/J13113